EP2287451B2 - Système d'échappement et ensemble associé de connection à un actionneur - Google Patents

Système d'échappement et ensemble associé de connection à un actionneur Download PDF

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Publication number
EP2287451B2
EP2287451B2 EP10162972.3A EP10162972A EP2287451B2 EP 2287451 B2 EP2287451 B2 EP 2287451B2 EP 10162972 A EP10162972 A EP 10162972A EP 2287451 B2 EP2287451 B2 EP 2287451B2
Authority
EP
European Patent Office
Prior art keywords
connection
actuator
exhaust gas
section
exhaust system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10162972.3A
Other languages
German (de)
English (en)
Other versions
EP2287451B1 (fr
EP2287451A1 (fr
Inventor
Michael Pommerer
Jürgen KOBE
Manfred Nicolai
Michael Ihring
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eberspaecher Exhaust Technology GmbH and Co KG
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Eberspaecher Exhaust Technology GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42542913&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2287451(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eberspaecher Exhaust Technology GmbH and Co KG filed Critical Eberspaecher Exhaust Technology GmbH and Co KG
Publication of EP2287451A1 publication Critical patent/EP2287451A1/fr
Publication of EP2287451B1 publication Critical patent/EP2287451B1/fr
Application granted granted Critical
Publication of EP2287451B2 publication Critical patent/EP2287451B2/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers

Definitions

  • the present invention relates to an exhaust system with a connection arrangement for acting as an active muffler actuator having the features of the preamble of claim 1.
  • a silencer is nowadays arranged in an exhaust system of the internal combustion engine.
  • This silencer can also be designed as an active silencer in the form of an actuator.
  • an active silencer is to make sure that the actuator is sufficiently thermally decoupled from the exhaust system.
  • an active silencer with an actuator is known, which is connected via a connection arrangement to a feeding pipe section of an exhaust system of an internal combustion engine, in particular of a motor vehicle.
  • the known connection arrangement is equipped with a connecting section arranged between the actuator and an exhaust-gas-side connection area for spacing the actuator relative to the exhaust system, wherein a change, namely an enlargement of a flow cross-section compared to at least the feeding pipe section, is formed in the connection system-side connection region.
  • a change namely an enlargement of a flow cross-section compared to at least the feeding pipe section
  • An exhaust system according to the preamble of claim 1 is known from EP 0 481 450 A1 known.
  • the present invention is concerned with the problem of providing an improved or at least another embodiment in an exhaust system with an actuator connected by such a connection arrangement designed as an active muffler, which is characterized in particular by an improved thermal decoupling of the actuator from the exhaust system.
  • the invention is based on the general idea of connecting an actuator acting as an active muffler to an exhaust system of an internal combustion engine, in particular of a motor vehicle, that at least one is connected in an exhaust-gas-side connection region to which the actuator is connected to a connection section for spacing with respect to the exhaust system Modification of a flow cross-section compared to at least one feeding pipe section is formed.
  • a better thermal decoupling of the actuator from the exhaust system can be achieved, which makes it possible to shorten the connection section.
  • the connecting portion By shortening the connecting portion, in turn, the acoustic efficiency of the actuator is improved.
  • the connection area on the exhaust system side is designed as a double pipe, in which a partition wall is arranged between two pipe halves.
  • At least one change in the flow cross-section in the connection area on the exhaust system side is produced by widening the connection area on the exhaust system side compared to at least the supply pipe section.
  • connection section is arranged at least partially parallel or at an acute angle to the connection area on the exhaust system side.
  • the formation of the exhaust system side connection region as a, in particular oval or round, double tube is preferred.
  • a connection arrangement 1 has a connection region 2 of an exhaust system 3, to which an actuator 4 acting as an active silencer is connected via a connection section 5.
  • the connecting portion 5 opens via a connection opening 6 in the exhaust system side connection area 2.
  • the connection area 2 opens with respect to an exhaust gas flow direction 7 arranged in front of the connection area 2 feeding tube section 8.
  • the connection region 2 is connected to a discharge pipe section 9, the is arranged in the exhaust gas flow direction 7 after the connection region 2.
  • connection region can be installed in an exhaust system 3 or the exhaust system side connection region 2 is formed as a part of the exhaust system 3 and the actuator 4 is fluidly connected to the connection region via its connection section 5 by means of the connection opening 6 2 connected or connectable.
  • the sound-damping effect of the actuator 4 with increasing distance from the connection region 2 and thus with increasing length of the connecting portion 5 is progressively worse.
  • the exhaust system 3 is flowed through by hot exhaust gases in accordance with the exhaust gas flow direction 7.
  • a vortex formation 10 can be set in the region of the connection opening 6, which causes an increased gas exchange between the connection section 5 and the connection region 2. Due to the vortex formation 10 increasingly hot exhaust gas of the exhaust system 3 enters the connecting section 5. This vortex formation 10 and the associated gas exchange, the thermal decoupling of the actuator 4 is deteriorated from the exhaust system 3. Also due to this, attention must be paid to a sufficient length of the connecting section 5.
  • the length of the connecting portion 5 can be shortened without deteriorating the thermal decoupling when the connecting portion 2 is provided with at least one change of a flow area of the exhaust gas compared to at least the feeding pipe portion 8.
  • Fig. 1 is such a change in the flow cross-section z. B. a widening 11 of the connection area 2 implemented.
  • a flow velocity of the exhaust gas in the connection region 2 decreases.
  • the vortex formation 10, in particular in the region of the connection opening 6, is reduced.
  • a reduction of flow noise and a reduction of a counterpressure caused by the actuator 4 acting as an active silencer are positively recorded.
  • the reduction of the vortex formation 10 reduces the gas exchange between the connection region 2 and the connection section 5, which results in improved thermal decoupling of the actuator 4 from the exhaust system 3.
  • connection assembly 1 Due to the improved thermal decoupling, it is now possible to make a shortening of the connecting portion 5. By this shortening of the connecting portion 5 but in turn the sound-absorbing effect of the actuator 4 is improved. Thus, by at least one change of the flow cross-section, such. As an expansion, in the connection area 2 implement several significant improvements of the connection assembly 1.
  • Fig. 2 can the in Fig. 1 shown embodiment by a arranged in the connection region Cover 12 can be improved. At least partially, the cover 12 conceals the connection opening 6 of the connection section 5 which opens into the connection region 2.
  • the cover 12 is formed as a pipe section 13.
  • This pipe section 13 may be integrally or integrally formed with at least the feeding pipe section of the exhaust system 3.
  • the vertebral formation 10 ' is reduced in the region of the connecting portion 5.
  • the pipe section 13 has a passage opening 14 at its end projecting into the connection region 2.
  • the plane spanned by the passage opening 14 can point in the direction of the connecting section 5, in the direction of the discharging pipe section 9 or on an area facing the connection opening 6.
  • further aerodynamic embodiments can be formed.
  • the upper section 15 of the pipe section 13 extends further into the connection region 2 than the lower section 16 of the pipe section 13.
  • the pipe section 13 projecting into the connection region 2 would be at least partially as a half pipe, for example formed, the upper portion 15 at least partially obscures the connection opening 6.
  • the pipe section 13 is formed continuously and integrally with the feeding pipe section 8 and the discharging pipe section 9 of the exhaust system 3.
  • the tube piece 13 arranged in the connection region 2 has at least one but preferably a plurality of through openings, which are also preferably arranged in a region of the tube piece 13 facing away from the connection opening 6. Even with such an embodiment, the thermal decoupling of the actuator 4 from the exhaust system 3 is further improved, without, however, impairing the acoustic connection of the actuator 4.
  • the cover 12 is at least partially spaced from the connection opening and / or that the cover 12 at least partially protrudes into the connection opening 6.
  • a constriction 17 of the flow cross-section compared to at least the feeding pipe section 8 is formed.
  • a kind of ramp 18 can be implemented, which can be positioned in the connection region in the exhaust gas flow direction 7 of the connection opening 6.
  • the connecting portion 5 is at least partially arranged in parallel or at an acute angle to the exhaust gas flow direction 7.
  • the at least partially parallel connection section 5 is at least partially separated by a separating plate 19 from a main flow path 20 of the exhaust gas.
  • connection region 2 in the manner of a, in particular oval or round, double tube 22, wherein the double tube 22 may be constructed of two D-shaped tube halves 23,24, between which a partition wall 19 may be arranged.
  • this partition wall 19 can have recesses 21, 21 ', so that the connecting section 5 of the actuator 4 connected to a first pipe half 23 is fluidically connected to the exhaust system 3 connected to a second pipe half 24.
  • connection arrangement 1 also has a cover 12 caused by the partition wall 19 of the connection opening 6. Furthermore, such an embodiment can be realized around a ramp 13 according to FIG Fig. 3 be extended. Somitsindje as needed, all design measures in any manner combined with each other without departing from the scope of the present invention.
  • connection arrangement 1 can be formed so that the trained as an active muffler actuator 4 at a reduced length of the connecting portion 5 has a very good thermal decoupling of the actuator 4 of the exhaust system 3, without the sound-absorbing effect of the actuator is impaired.
  • a reduction of the flow noise is made possible by at least some of the constructive measures described above. Also, by at least some of the design measures, a reduction of the caused by the active silencer actuator 4 caused flow resistance or back pressure can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Claims (4)

  1. Système de gaz d'échappement (3) d'un moteur à combustion interne, en particulier d'un véhicule,
    - avec un actionneur (4) agissant comme un silencieux d'échappement actif,
    - avec une région de raccordement (2) de côté du système de gaz d'échappement,
    - avec une portion tubulaire d'amenée (8) arrangée en amont de la région de raccordement (2) par rapport à un sens de flux de gaz d'échappement (7),
    - avec une portion tubulaire évacuante (9), arrangée en aval de la région de raccordement (2) dans un sens de flux de gaz d'échappement (7),
    - où l'actionneur (4) est lié au système de gaz d'échappement (3) au moyen d'un arrangement de liaison (1),
    - où l'arrangement de liaison (1) comprend une portion de liaison (5) disposée entre l'actionneur (4) et la région de raccordement (2) pour espacer l'actionneur (4) par rapport au système de gaz d'échappement (3),
    - où dans la région de raccordement (2) au moins une variation (11, 17) d'une section transversale d'écoulement comparé à au moins une portion tubulaire d'amenée (8) est réalisée,
    - où la région de raccordement (2) est conçue comme un tuyau double (22) dans lequel entre deux moitiés de tuyau (23, 24) une paroi de séparation (19) est disposée,
    caractérisé en ce que le tuyau double (22) présente dans sa paroi de séparation (19) disposée entre les deux moitiés de tuyau (23, 24) au moins une cavité (21, 21').
  2. Système de gaz d'échappement selon la revendication 1,
    caractérisé en ce que
    la région de raccordement (2) du côté de l'installation de gaz d'échappement présente un élargissement (11) de la section transversale d'écoulement comparé à au moins la portion tubulaire d'amenée (8).
  3. Système de gaz d'échappement selon une des revendications précédentes,
    caractérisé en ce que
    la portion de liaison (5) est disposée au moins partiellement parallèlement ou en formant un angle aigu par rapport à la direction d'écoulement de gaz d'échappement (7).
  4. Système de gaz d'échappement selon une des revendications précédentes,
    caractérisé en ce que
    le tuyau double (22) a une configuration ovale ou ronde.
EP10162972.3A 2009-07-10 2010-05-17 Système d'échappement et ensemble associé de connection à un actionneur Not-in-force EP2287451B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009032553A DE102009032553A1 (de) 2009-07-10 2009-07-10 Abgasanlage und zugehörige Verbindungsanordnung für einen Aktuator

Publications (3)

Publication Number Publication Date
EP2287451A1 EP2287451A1 (fr) 2011-02-23
EP2287451B1 EP2287451B1 (fr) 2013-10-30
EP2287451B2 true EP2287451B2 (fr) 2017-03-15

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ID=42542913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10162972.3A Not-in-force EP2287451B2 (fr) 2009-07-10 2010-05-17 Système d'échappement et ensemble associé de connection à un actionneur

Country Status (3)

Country Link
US (1) US20110005857A1 (fr)
EP (1) EP2287451B2 (fr)
DE (1) DE102009032553A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0903554D0 (en) * 2009-03-02 2009-04-08 Wheeler Russell A fluid transfer pipe and fluid transfer apparatus and a fluid attenuator and attenuator apparatus
DE102010042679A1 (de) * 2010-10-20 2012-04-26 J. Eberspächer GmbH & Co. KG Schalldämpfer
DE102011075643A1 (de) * 2011-05-11 2012-11-15 J. Eberspächer GmbH & Co. KG Abgasanlagenkomponente
US9904301B2 (en) * 2015-11-02 2018-02-27 White's Equipment Rental, Llc In-line pressure relief apparatus
DE102018107531A1 (de) * 2018-03-29 2019-10-02 Faurecia Emissions Control Technologies, Germany Gmbh Abgasanlage für einen Verbrennungsmotor eines Kraftfahrzeugs
DE102019103977A1 (de) * 2019-02-18 2020-08-20 Faurecia Emissions Control Technologies, Germany Gmbh Fahrzeugabgasschalldämpfer sowie Fahrzeug
DE102019110538B4 (de) * 2019-04-24 2023-03-23 Tenneco Gmbh Kraftfahrzeuggeräusch-Unterdrückungssystem

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DE8426956U1 (de) † 1984-09-13 1985-01-03 Paul Gillet Gmbh, 6732 Edenkoben Rohrverbindung in doppelrohrauspuffanlagen
DE3437902A1 (de) † 1983-10-20 1985-05-09 Nissan Motor Co., Ltd., Yokohama, Kanagawa Auspuffleitungs-verbindungsvorrichtung
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DE4021563A1 (de) † 1990-07-06 1992-01-09 Opel Adam Ag Abgasleitung fuer eine mindestens vierzylindrige brennkraftmaschine mit gerader zylinderanzahl
EP0481450A1 (fr) † 1990-10-19 1992-04-22 HEINRICH GILLET GmbH & CO. KG Dispositif de silencieux pour moteur à combustion interne
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437902A1 (de) † 1983-10-20 1985-05-09 Nissan Motor Co., Ltd., Yokohama, Kanagawa Auspuffleitungs-verbindungsvorrichtung
DE8426956U1 (de) † 1984-09-13 1985-01-03 Paul Gillet Gmbh, 6732 Edenkoben Rohrverbindung in doppelrohrauspuffanlagen
DE3838148C1 (en) † 1988-11-10 1990-03-29 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Exhaust line for a spark ignition internal combustion engine
DE4021563A1 (de) † 1990-07-06 1992-01-09 Opel Adam Ag Abgasleitung fuer eine mindestens vierzylindrige brennkraftmaschine mit gerader zylinderanzahl
EP0481450A1 (fr) † 1990-10-19 1992-04-22 HEINRICH GILLET GmbH & CO. KG Dispositif de silencieux pour moteur à combustion interne
DE4317403A1 (de) † 1993-05-26 1994-12-01 Nokia Deutschland Gmbh Anordnung zur aktiven Schalldämpfung
WO1995030393A1 (fr) † 1994-05-10 1995-11-16 Noise Cancellation Technologies, Inc. Attenuateur acoustique actif
EP0716257A2 (fr) † 1994-12-06 1996-06-12 HEINRICH GILLET GMBH & CO. KG Tuyau double
US5623918A (en) † 1995-07-07 1997-04-29 Carrier Corporation Inducer condensate channel
WO1998020239A1 (fr) † 1996-11-06 1998-05-14 Emitec Gesellschaft Für Emissionstechnologie Mbh Systeme de conduite de gaz d'echappement pour evacuer des gaz d'echappement se degageant d'un moteur a combustion interne
JPH10212927A (ja) † 1997-01-30 1998-08-11 Kawasaki Heavy Ind Ltd 自動二輪車の排気管構造
JPH11324668A (ja) † 1998-05-11 1999-11-26 Sango Co Ltd 排気管の集合部構造
US6764361B1 (en) † 2001-10-04 2004-07-20 Kawasaki Jukogyo Kabushiki Kaisha Personal watercraft
DE102004040421A1 (de) † 2004-08-19 2006-03-09 J. Eberspächer GmbH & Co. KG Aktiver Abgasschalldämpfer

Also Published As

Publication number Publication date
EP2287451B1 (fr) 2013-10-30
DE102009032553A1 (de) 2011-01-20
US20110005857A1 (en) 2011-01-13
EP2287451A1 (fr) 2011-02-23

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